Galaxy Magnitudes. II: The Limiting Magnitude of the Lick Galaxy Survey

Details Galaxy Magnitudes. II: The Limiting Magnitude of the Lick Galaxy Survey Galaxy Magnitudes. II: The Limiting Magnitude of the Lick Galaxy Survey

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..30..127k&link_type=abstract

Astrophysics and Space Science, Volume 30, Issue 1, pp.127-134

Astronomy and Astrophysics

Astrophysics

5

Scientific paper

An improved definition of ‘limiting magnitude’ of galaxy counts is proposed. It depends on the probability, Φ (m), of identifying and counting a galaxy of magnitudem. A plausible formula for Φ (m) containing two constants is assumed and a method for calculating the constants from observations is developed. Some of the faintest galaxies counted in the Lick galaxy program (Shane and Wirtanen, 1967) were measured photoelectrically with the Lick 120-in. telescope, and from these measures the constants in Φ(m) were determined. The resulting limiting magnitude of the Lick counts isB l=18.90.

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